The atmosphere is made up of several distinct layers. our weather occurs in which layer? a) thermosphere b) mesosphere c) stratosphere d) troposphere

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

I'm soooo sorry but i can't answer but you can ask another professor